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Dianthus Vanensis (Caryophyllaceae), a New Species from Turkey

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Dianthus Vanensis (Caryophyllaceae), a New Species from Turkey Turkish Journal of Botany Turk J Bot (2013) 37: 219-224 http://journals.tubitak.gov.tr/botany/ © TÜBİTAK Research Article doi:10.3906/bot-1203-39 Dianthus vanensis (Caryophyllaceae), a new species from Turkey 1, 2 3 Ahmet İLÇİM *, Lütfi BEHÇET , Muzaffer MÜKEMRE 1 Department of Biology, Faculty of Science and Letters, Mustafa Kemal University, 31034, Antakya, Turkey 2 Department of Biology, Faculty of Science and Letters, Bingöl University, 12000, Bingöl, Turkey 3 Graduate School of Natural and Applied Sciences, Yüzünücü Yıl University, 65000, Van, Turkey Received: 27.03.2012 Accepted: 27.09.2012 Published Online: 15.03.2013 Printed: 15.04.2013 Abstract: Dianthus vanensis Behçet & İlçim is described as a new species. It is confined to Çatak District (Van) in Eastern Anatolia, Turkey. The diagnostic characters and taxonomic comments on the species are given. Notes are also presented on its ecology. A distribution map of new and related species is also provided. Key words: Dianthus, taxonomy, flora, Turkey 1. Introduction (Behçet & Avlamaz, 2009; Doğan et al., 2010; Kandemir Caryophyllaceae is one of the largest angiosperm families. & Türkmen, 2010; Hamzaoğlu et al., 2011; Behçet & It comprises approximately 86 genera and almost 2200 Rüstemoğlu, 2012). species, which are distributed on all continents but The distribution in neighbouring countries is as concentrated in the Mediterranean and Irano-Turanian follows: 78 species in the former USSR (Shishkin, 1995), region. The species of the family are heliophytes that 49 in the Flora Iranica area (Rechinger, 1988), 121 in occur in dry, open habitats. Some members are restricted Europe (Tutin, 1964), 19 in Flora Palestina (Post, 1932), to mountainous regions (Johnson & Wilson, 1993; Fior and 3 species in Iraq (Rechinger, 1964). et al., 2006). Traditionally, Caryophyllaceae are divided into 3 subfamilies: Alsinoideae, Caryophylloideae, and For the scanning electron microscopy (SEM) studies, Paronychioideae (Pax & Hoffman, 1934; Bittrich, 1993; mature seeds were mounted using double-sided tape on Rabeler & Bittrich, 1993; Fior et al., 2006). SEM stubs and coated with gold in a Polaron SC502 sputter The family Caryophyllaceae is important due to its coater. They were examined with a JEOL JSM 5500 LV medicinal and ornamental properties (Bakshi, 1984). In SEM (5 kV) at Kahramanmaraş Sütçü İmam University. Turkey 32 genera, including over 470 native species, occur as species (Yıldız, 2002). 2. Species description The genus Dianthus L. belongs to the tribe Silenoideae Dianthus vanensis Behçet & İlçim sp. nov. (Figures 1–5). (Engler, 1887), which is one of the widespread genera in Type: Turkey. C9 Van: Çatak, Konalga village, Tanrıverdi Caryophyllaceae. It is the next largest genera (Silene L. has hamlet, around Zevviçal, steppe, 2372 m, 25.vi.2010, 700 species) and contains almost 600 species throughout M.Mükemre 300 (holotype: ANK; isotypes: VANF, GAZI, the world (Bağcı, 2008; Hamzaoğlu et al., 2011). It is Bingöl Univ. Herb., Mustafa Kemal Univ. Herb.) widespread, mainly in Europe and Asia, with a few species Diagnoses: Dianthus vanensis is closely related to D. in North and South Africa and North America. When the libanotis and D. crinitus subsp. crinitus. It mainly differs first revision of Turkish Dianthus was carried out by Reeve (1967), 67 species were reported. Since then, 6 species and from D. libanotis with its shorter herbaceous stems, 9–19 1 new variety have been described in Turkey (Davis et al., cm long (not robust, 40–60 cm), shorter leaves 15–40 1988; Güner, 2000; Aytaç & Duman, 2004; Vural, 2008; × 1–2 mm (not 20–70 × 4–8 mm with spiny apex), and Yılmaz et al., 2011). Thus, the members of the Dianthus shorter calyx 30–32 mm (not 36–39 mm). D. vanensis taxa in Turkey have reached 74. The East Anatolia region differs from D. crinitus subsp. crinitus by barbulate petals is one of the important floristic regions in Turkey. In recent (not ebarbulate), shorter leaves 15–40 mm long (not 20–50 years a number of species have been described or recorded mm); glabrous (not papillose-scabrous). * Correspondence: [email protected] 219 İLÇİM et al. / Turk J Bot Description: Perennial, with woody rootstock. Flowering stem ascending-erect, 9–19 cm long, branched or not, 1–3-flowered, glabrous. Basal leaves few, 10–25 × 1–2 mm, linear to narrowly linear-lanceolate, acute, glabrous. Cauline leaves linear, acuminate, ±rigid, curved divaricate, canaliculate, 2–4 pairs, 15–40 × 1–2 mm, usually shorter than internodes, rarely equal; sheet 1–3 mm, membranous. Bracts 4–6, with scarious margin; outer 28–30 mm long, almost equal to calyx length, curved divaricate narrowed from just above the middle into a long acuminate-aristate apex, inner shorter, 15–17 mm long, partly purplish at base, narrower than outer. Calyx 30–32 × 5–5.5 mm, glabrous, greenish to purplish, cylindrical, teeth 7–10 mm, linear-lanceolate, mucro 1 mm long, with Figure 1. Habit of Dianthus vanensis Behçet & İlçim (from a narrow scarious, slightly ciliate at margin. Petal 35–37 holotype). mm long; limb 15 × 11 mm, barbulate, pinkish-purple, a b c de Figure 2. a- General view of Dianthus vanensis, b- petal of D. vanensis, c- petal of D. crinitus subsp. crinitus, d- petal of D. orientalis, e- petal of D. libanotis. 220 İLÇİM et al. / Turk J Bot Ovaries 8–9 × 2–2.5 mm; styles 2, 10–10.5 mm long, shorter than petal. Seeds 3–4 × 2–2.5 mm. 3. Distribution and suggested conservation status Dianthus vanensis is a local endemic species known only by type locality, C9 Van. The species is very rare in the area. Due to grazing and erosion, the species is strongly threatened by extinction in the wild if protection measures are not taken. Therefore, we recommend classification of D. vanensis as Critically Endangered (CR) (IUCN, 2010). Dianthus vanensis grows on the steppe of Çatak District (Van Province) at an altitude of 2372 m. The vegetation in this area is very poor due to heavy grazing and soil erosion. Area vegetation is formed by herbaceous plants including Gundelia tournefortii L. var. tournefortii, Salvia acrochlamys Boiss. & Kotschy, Euphorbia denticulata Lam., Hypericum scabrum L., Allium armenum Boiss. & Kotschy, Chaerophyllum macropodum Boiss., Verbascum cheiranthifolium Boiss. var. cheiranthifolium, Acantholimon armenum Boiss. & Huet var. balansae Boiss. & Huet, Bungea trifida (Vahl.) C.A.Mey., Delphinium kurdicum Boiss. & Hohen., Atraphaxis spinosa L., Saxifraga kotschyi Boiss., Galium kurdicum Boiss. & Hoken, and Ferulago angulata (Schlecht.) Boiss. subsp. angulata. Etymology: The specific epithet is derived from the name of the city, Van, where the type was collected. This new species belongs to section Fimbriati Boiss., which forms fimbriate petals. According to Rechinger (1988), this section contains 28 species in Flora Iranica and 6 species in the Flora of Turkey (Reeve, 1966). The Figure 3. Dianthus vanensis. a- calyx, b- petal, c- inner bracts, specimens were cross-checked with the keys provided by d- outer bracts. Reeve (1966) and the Dianthus accounts in the literature, including Flora Iranica (Rechinger, 1988) and the Flora of fimbriate for less than 1/3 its length. Stamens 10; filaments Syria, Palestine and Sinai (Post, 1933). We concluded that 20–25 mm long, glabrous, techa 2.0–2.1 × 0.8–0.9 mm. the closest species to our material seem to be Dianthus Figure 4. Distribution map of Dianthus vanensis (∆). D. orientalis subsp. nassireddini, ( ); D. crinitus subsp. crinitus, (◊); and D. libanotis, (Ο). 221 İLÇİM et al. / Turk J Bot According to the Flora of Turkey, members of the section Fimbriati have ebarbulate petals. In addition, length of the bracts varies between 1/3 and 1/2 of the calyx length, except in Dianthus libanotis. As in D. libanotis this new species has barbulate petals and longer bracts. It is somewhat similar to D. libanotis in terms of floral characteristics; however, petal colour is different. Moreover, it is clearly distinguished from D. libanotis by its shorter herbaceous stems, 9–19 cm long (not robust, 40–60 cm), shorter leaves 15–40 × 1–2 mm (not 20–70 × 4–8 mm with spiny apex), shorter calyx 30–32 mm (not 36–39 mm), and pinkish-purple petals (not white petals). Dianthus crinitus has 2 varieties, according to Reeve (1966). Later, Rechinger (1988) evaluated these varieties a and preserved the names Dianthus crinitus var. crinitus as a subspecies and Dianthus crinitus var. crosspetalus as a species in Flora Iranica. Currently, D. crinitus has 6 subspecies in Flora Iranica. D. vanensis differs from D. crinitus subsp. crinitus by barbulate petals and longer bracts and shorter (15–40 mm long), glabrous leaves (not papillose-scabrous, 20–50 mm). A more detailed comparison of the species is given in the Table. According to Rechinger (1986), D. orientalis has 8 subspecies in Flora Iranica. This new species is related to D. orientalis Adams bc subsp. nassireddini (Stapf) Rech.f. from Iran and Iraq; however, it differs by clearly barbulate, 15 mm long petal lamina (not indistinctly barbulate, 5–6 mm) and a longer Figure 5. SEM image of Dianthus vanensis seed. a- side view, b- calyx 30–32 mm long (not 20–23 mm). A more detailed central cells, c- wing cells. comparison of the species can be seen in the Table. Dianthus vanensis has brown, broadly elliptic-ovate, libanotis Labill, D. crinitus Sm. subsp. crinitus, and D. winged shaped, 3–4 × 2–2.5 mm diameter seeds (Figure 4); orientalis subsp. nassireddini (Stapf) Rech.f. however, the seed shape of D. crinitus var. crinitus is peltate Table. Comparison
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